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Lichenoid disorders

Author: Hon A/Prof Amanda Oakley, Dermatologist, Hamilton, New Zealand, 2011.

Table of contents

What are lichenoid disorders?

Lichen is found growing on trees and elsewhere in the garden or forest. It is a symbiotic fungus/alga characterised by flat-topped organisms. Lichenoid skin disorders got their name from their appearance – also flat topped and often somewhat scaly. They are characterised by a particular type of inflammation found on histology.

Classification of lichenoid disorders
Lichen amyloidosis Lichen amyloidosis
Lichenoid drug eruption Lichenoid drug eruption
Lichenoid keratosis Lichenoid keratosis
Lichen nitidus Lichen nitidus
Lichen planus Lichen planus
Lichen sclerosus Lichen Sclerosus
Lichen simplex Lichen simplex
Lichen striatus Lichen striatus
Oral lichen planus Oral lichen planus
Pityriasis lichenoides Pityriasis lichenoides
Erosive lichen planus Erosive lichen planus
Annular lichenoid dermatitis of youth  
Lichen scrofulosorum  
Lichenoid amalgam reaction  
Oral lichenoid drug eruption  
Lichen myxoedematosus  
Lichen spinulosus  


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